Impulse responses recorded as true-stereo files allow you to create a very realistic impression of the corresponding room.
REVerence can only process true-stereo impulse response files with the following channel configuration (in exactly that order): LL, LR, RL, RR.
The channels are defined as follows:
|
Channel |
The signal from this source… |
…was recorded with this microphone |
|---|---|---|
|
LL |
left source |
left microphone |
|
LR |
left source |
right microphone |
|
RL |
right source |
left microphone |
|
RR |
right source |
right microphone |
REVerence automatically works in true-stereo mode if you load a 4-channel impulse response.
Therefore, if you are working with surround files, that is, 4-channel impulse responses recorded with a Quadro configuration (L/R, LS/RS), these files would be processed in true-stereo mode, too.
So how can you prevent REVerence from unintentionally processing surround files in true-stereo mode? The answer is a Recording Method attribute that can be written to the iXML chunk of the corresponding impulse response file. Whenever you load an impulse response with a 4-channel configuration, REVerence searches the iXML chunk of the file. If the plug-in finds the Recording Method attribute, the following happens:
-
If the attribute is set to TrueStereo, the plug-in works in true-stereo mode.
-
If the attribute is set to A/B or Quadro, the plug-in works in normal stereo mode and processes only the L/R channels of the surround file.